Aretha Sack and Janine Lee began their startup, Floss Gloss, while in college, mixing up their own shades and selling them. Then friends became investors and voila, here's their spring/summer line.

Aretha Sack and Janine Lee began their startup, Floss Gloss, while...

As students at California College of the Arts in San Francisco, Aretha Sack and Janine Lee would mix nail polishes into their own custom colors, pour them back into the jar, and sell them - "just making some Franken-polish," said Lee, using the term popularized on crafting websites.

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